Character: 磋
Modern (Beijing) reading: cuō
Preclassic Old Chinese: shāj
Classic Old Chinese: shāj
Western Han Chinese: shāj
Eastern Han Chinese: shǟ
Early Postclassic Chinese: shā
Middle Postclassic Chinese: shā
Late Postclassic Chinese: shā
Middle Chinese: châ
English meaning : to rub, file, polish
Radical: 0
Four-angle index: 0
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